PLATE 2. 



Aster Bernardinus Hall. 



12. A flowering stem, showing the lax foliage and the arrangement of 



the heads. 



13. A more loose inflorescence. 



14. Leaf -surface, showing the character of the pubescence. 



15. Two leaf -hairs. 



16. An outer bract of the involucre. 



17. An inner bract of the involucre. 



18. A ray-flower. 



19. The style-branches of a ray-flower. 



20. A disk-flower. 



21. The style-branches of a disk-flower. 



22. Three stamens from a disk-flower. 



23. A single pappus-bristle from a disk-flower. 



Figures 12 and 13 are reduced to one-half. The remaining figures are 

 enlarged. 



All the figures were drawn by H. N. Bagley under the direction of 

 H. M. Hall. 



[300] 



